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超硬材料抗动载性能测试方法与DFZY型动载仪的研制
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作者 李国民 张祖培 《超硬材料与工程》 1997年第3期27-30,共4页
通过对国内外钻探用超硬材料抗动载性能测试方法的研究,从众多方法中优选出落锤法作为DFZY型动载仪的测试原理,并创造性解决了落锤法测试时冲击功的不连续性问题,研制了DFZY型动载测试仪。
关键词 超硬材料 性能 金刚石 动载仪 落锤法
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Smart Meters and Under-Frequency Load Shedding
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作者 Krzysztof Billewicz 《Journal of Energy and Power Engineering》 2015年第10期905-911,共7页
In some countries, there exists a risk of power deficit in the EPS (electrical power system). This is a very serious problem and there are various solutions to deal with it. A power deficit in the EPS leads to frequ... In some countries, there exists a risk of power deficit in the EPS (electrical power system). This is a very serious problem and there are various solutions to deal with it. A power deficit in the EPS leads to frequency decrease in the power system. A dedicated automation to load shedding is used to maintain proper EPS operation. For some time, it has applied a mechanism called demand-side response, which in case of an emergency situation allows for a "more civilized" rationing of electricity to customers, with their consent. Such programs require that the utilities pay the customers for their agreement. The author proposes a new solution, intermediate between strict ALS (acting relieving automation) and demand-side response programs, where the companies have to send information about the price of energy or control signals to households. 展开更多
关键词 Smart meter smart grid under-frequency load shedding electric power system.
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